Wand and Scroll Mastery
Wand and Scroll Mastery is an enhancement that increases the effects of wands and scrolls by 25/50/75 %.
It is available from multiple enhancement trees. In general, taking W&S enhancements from multiple trees should be impossible and effects should not stack.
In some cases, it also increases the DC of spells cast from wands. However, it is most valued for its effect on Cure wands and Heal scrolls.